Unit 3b Chemistry Vocabulary

The force of attraction that holds two atoms together:

• Covalent Compound

• Ion

• Chemical Bond

A compound that contains only bonds formed by shared electrons.

• Covalent Compounds

• Ionic Compound

• Covalent Bond

The force of attraction between the nuclei of atoms and the electrons shared by the atoms.

• Ion

• Covalent Bond

• Ionic Compound

A charged particle that forms during chemical changes when one or more valence electrons are transferred from one atom to another.

• Ionic Compound

• Chemical Bond

• Ion

A compound that contains only bonds formed by losing or faining electrons.

• Ionic Compound

• Covalent Compound

• Covalent Bond

A neutral group of atoms held together by covalent bonds.

• Covalent Bonds

• Ionic Bond

• Ionic Compound

The smallest unit of matter that makes up all the matter in the universe.

• Atom

• Element

• Compound

Pure substance where all atoms are the same; cannot be broken down; can be a molecule.

• Atom

• Molecule

• Element

Made up of two or more kinds of atoms [molecule]; atoms can be separated if enough energy is supplied.

• Atom

• Compound

• Element

Particles that are smaller than an atom and make up the atom. They include protons, neutrons, and electrons.

• Atom

• Element

• Subatomic Particle